Before 1918, approximately 53% of the wolves in the New Mexico area were male, and 47% were female. However, cattle ranchers in this area have made a determined effort to exterminate wolves. From 1918 to the present, approximately 74% of wolves in the region are male, and 26% are female. Biologist suspect that male wolves are more likely than females to return to an area where the population has been greatly reduced.
Before 1918, in a random sample of 13 wolves spotted in the region, what is the probability that 10 or more were male?